{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "60a370dd",
   "metadata": {},
   "source": [
    "------\n",
    "* 时间：2022-10-25/week10\n",
    "* 记录人：王秀梅"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "bfb160da",
   "metadata": {},
   "source": [
    "# 上周回顾\n",
    "> 1. while循环：while True-->无限循环\n",
    ">> 1. 指定次数，while True 可以实现for循环的指定次数，增加一个count计数器即可。\n",
    ">> 2. while True 一般与永华呼入一起使用，让用户可以重复输入，知道某些条件成立结束输入（购物车）\n",
    "> 2. 购物车实践（平时作业）\n",
    "# 本周内容\n",
    "> 1. 元组\n",
    "> 2. 集合\n",
    "> 3. 字典"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "77b015f2",
   "metadata": {},
   "source": [
    "# 元组（tuple）\n",
    "> 1. 元组的基本内容（形态）\n",
    "> 2. 元组的性质\n",
    ">> 1. 有序性(indexing,sliceing)\n",
    ">> 2. <font color=\"red\">**不可变性**</font>,元组没有：增、删、改\n",
    "> 3. 元组的一般方法"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "bc3cbb60",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(180001, 180002, 180003) <class 'tuple'>\n"
     ]
    }
   ],
   "source": [
    "网三_学号 = (180001,180002,180003)\n",
    "print(网三_学号,type(网三_学号))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "de4faa82",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(190001, 190002, 190003) <class 'tuple'>\n"
     ]
    }
   ],
   "source": [
    "网二_学号 = 190001,190002,190003\n",
    "print(网二_学号,type(网二_学号))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "58fec656",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "190001"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "网二_学号[0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "853cb91a",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(190002, 190003)"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "网二_学号[1:]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "b7672fed",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "time.struct_time(tm_year=2022, tm_mon=10, tm_mday=25, tm_hour=15, tm_min=6, tm_sec=26, tm_wday=1, tm_yday=298, tm_isdst=0)"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# 元组的实际案例\n",
    "import time\n",
    "time.localtime()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "aef2ac0a",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Help on struct_time object:\n",
      "\n",
      "class struct_time(builtins.tuple)\n",
      " |  struct_time(iterable=(), /)\n",
      " |  \n",
      " |  The time value as returned by gmtime(), localtime(), and strptime(), and\n",
      " |  accepted by asctime(), mktime() and strftime().  May be considered as a\n",
      " |  sequence of 9 integers.\n",
      " |  \n",
      " |  Note that several fields' values are not the same as those defined by\n",
      " |  the C language standard for struct tm.  For example, the value of the\n",
      " |  field tm_year is the actual year, not year - 1900.  See individual\n",
      " |  fields' descriptions for details.\n",
      " |  \n",
      " |  Method resolution order:\n",
      " |      struct_time\n",
      " |      builtins.tuple\n",
      " |      builtins.object\n",
      " |  \n",
      " |  Methods defined here:\n",
      " |  \n",
      " |  __reduce__(...)\n",
      " |      Helper for pickle.\n",
      " |  \n",
      " |  __repr__(self, /)\n",
      " |      Return repr(self).\n",
      " |  \n",
      " |  ----------------------------------------------------------------------\n",
      " |  Static methods defined here:\n",
      " |  \n",
      " |  __new__(*args, **kwargs) from builtins.type\n",
      " |      Create and return a new object.  See help(type) for accurate signature.\n",
      " |  \n",
      " |  ----------------------------------------------------------------------\n",
      " |  Data descriptors defined here:\n",
      " |  \n",
      " |  tm_gmtoff\n",
      " |      offset from UTC in seconds\n",
      " |  \n",
      " |  tm_hour\n",
      " |      hours, range [0, 23]\n",
      " |  \n",
      " |  tm_isdst\n",
      " |      1 if summer time is in effect, 0 if not, and -1 if unknown\n",
      " |  \n",
      " |  tm_mday\n",
      " |      day of month, range [1, 31]\n",
      " |  \n",
      " |  tm_min\n",
      " |      minutes, range [0, 59]\n",
      " |  \n",
      " |  tm_mon\n",
      " |      month of year, range [1, 12]\n",
      " |  \n",
      " |  tm_sec\n",
      " |      seconds, range [0, 61])\n",
      " |  \n",
      " |  tm_wday\n",
      " |      day of week, range [0, 6], Monday is 0\n",
      " |  \n",
      " |  tm_yday\n",
      " |      day of year, range [1, 366]\n",
      " |  \n",
      " |  tm_year\n",
      " |      year, for example, 1993\n",
      " |  \n",
      " |  tm_zone\n",
      " |      abbreviation of timezone name\n",
      " |  \n",
      " |  ----------------------------------------------------------------------\n",
      " |  Data and other attributes defined here:\n",
      " |  \n",
      " |  n_fields = 11\n",
      " |  \n",
      " |  n_sequence_fields = 9\n",
      " |  \n",
      " |  n_unnamed_fields = 0\n",
      " |  \n",
      " |  ----------------------------------------------------------------------\n",
      " |  Methods inherited from builtins.tuple:\n",
      " |  \n",
      " |  __add__(self, value, /)\n",
      " |      Return self+value.\n",
      " |  \n",
      " |  __contains__(self, key, /)\n",
      " |      Return key in self.\n",
      " |  \n",
      " |  __eq__(self, value, /)\n",
      " |      Return self==value.\n",
      " |  \n",
      " |  __ge__(self, value, /)\n",
      " |      Return self>=value.\n",
      " |  \n",
      " |  __getattribute__(self, name, /)\n",
      " |      Return getattr(self, name).\n",
      " |  \n",
      " |  __getitem__(self, key, /)\n",
      " |      Return self[key].\n",
      " |  \n",
      " |  __getnewargs__(self, /)\n",
      " |  \n",
      " |  __gt__(self, value, /)\n",
      " |      Return self>value.\n",
      " |  \n",
      " |  __hash__(self, /)\n",
      " |      Return hash(self).\n",
      " |  \n",
      " |  __iter__(self, /)\n",
      " |      Implement iter(self).\n",
      " |  \n",
      " |  __le__(self, value, /)\n",
      " |      Return self<=value.\n",
      " |  \n",
      " |  __len__(self, /)\n",
      " |      Return len(self).\n",
      " |  \n",
      " |  __lt__(self, value, /)\n",
      " |      Return self<value.\n",
      " |  \n",
      " |  __mul__(self, value, /)\n",
      " |      Return self*value.\n",
      " |  \n",
      " |  __ne__(self, value, /)\n",
      " |      Return self!=value.\n",
      " |  \n",
      " |  __rmul__(self, value, /)\n",
      " |      Return value*self.\n",
      " |  \n",
      " |  count(self, value, /)\n",
      " |      Return number of occurrences of value.\n",
      " |  \n",
      " |  index(self, value, start=0, stop=9223372036854775807, /)\n",
      " |      Return first index of value.\n",
      " |      \n",
      " |      Raises ValueError if the value is not present.\n",
      " |  \n",
      " |  ----------------------------------------------------------------------\n",
      " |  Class methods inherited from builtins.tuple:\n",
      " |  \n",
      " |  __class_getitem__(...) from builtins.type\n",
      " |      See PEP 585\n",
      "\n"
     ]
    }
   ],
   "source": [
    "help(time.localtime())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "a2bed515",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "([1, 2, 3, 4], [3, 4, 5, 6]) <class 'tuple'>\n",
      "[1, 2, 3, 4] 2198369758016\n"
     ]
    }
   ],
   "source": [
    "tuple_test = ([1,2,3,4],[3,4,5,6])\n",
    "print(tuple_test,type(tuple_test)),id(tuple_test)\n",
    "print(tuple_test[0],id(tuple_test[0]))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "41299567",
   "metadata": {},
   "outputs": [],
   "source": [
    "tuple_test[0].append(100)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "548a5948",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "([1, 2, 3, 4, 100], [3, 4, 5, 6]) <class 'tuple'>\n",
      "[1, 2, 3, 4, 100] 2198369758016\n"
     ]
    }
   ],
   "source": [
    "print(tuple_test,type(tuple_test)),id(tuple_test)\n",
    "print(tuple_test[0],id(tuple_test[0]))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "c321ac9a",
   "metadata": {},
   "outputs": [],
   "source": [
    "# 一般情况下，元组里面存放的是常量（不可变），何为常量：数字，字符串\n",
    "#                    不存放变量 如：列表，字典"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "17f0ec34",
   "metadata": {},
   "source": [
    "# 2.集合（sets）\n",
    "> 1. 集合的基本概念\n",
    ">> 1. 性质：没有重复项\n",
    "> 2. 集合的一般方法\n",
    ">> 1. 集合的运算：& ,\n",
    ">> 2. 集合的一般运算：intersection\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "80b58821",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['apple', 'orange', 'apple', 'pear', 'orange', 'banana']\n",
      "{'banana', 'orange', 'pear', 'apple'}\n"
     ]
    }
   ],
   "source": [
    "basket_lists = [\"apple\",\"orange\",\"apple\",\"pear\",\"orange\",\"banana\"]\n",
    "basket_sets = {\"apple\",\"orange\",\"apple\",\"pear\",\"orange\",\"banana\"}\n",
    "print(basket_lists)\n",
    "print(basket_sets)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "2f6b4d19",
   "metadata": {},
   "outputs": [],
   "source": [
    "舞蹈社 = {1801,1802,1803,1804,1805}\n",
    "电竞社 = {1806,1807,1801,1802,1811}"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3807de57",
   "metadata": {},
   "source": [
    "* 集合的与运算，交集"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "id": "dfff8cea",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{1801, 1802}"
      ]
     },
     "execution_count": 20,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "舞蹈社 & 电竞社"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "0a953553",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{1801, 1802}"
      ]
     },
     "execution_count": 22,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "舞蹈社.intersection(电竞社)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "ca9334cf",
   "metadata": {},
   "source": [
    "* 集合的或运算，并集"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "5b8432cb",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{1801, 1802, 1803, 1804, 1805, 1806, 1807, 1811}"
      ]
     },
     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "舞蹈社 | 电竞社"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "id": "65f6da37",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "8"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "len(舞蹈社 | 电竞社)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "id": "4abd15df",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{1801, 1802, 1803, 1804, 1805, 1806, 1807, 1811}"
      ]
     },
     "execution_count": 25,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "舞蹈社.union(电竞社)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "32fbafce",
   "metadata": {},
   "source": [
    "# 3. 字典（dict）\n",
    "> 1. 字典的基本概念：\n",
    ">> 1. 字典性质：\n",
    ">>> 1. 无序性\n",
    ">>> 2. keys是不可变的:就行列表、字符串等有序的数据结构他的index不可变是一样的\n",
    ">>> 3. keys是唯一的\n",
    ">> 2. 字典的形态\n",
    "> 2. 字典的一般方法\n",
    ">> 1. 字典的创建\n",
    ">> 2. 字典的函数和方法\n",
    ">>> 1. 增加\n",
    ">>> 2. 删除\n",
    ">>> 3. 修改"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3c3a8255",
   "metadata": {},
   "source": [
    "## 3.1 字典的性质和概念"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "id": "00625a12",
   "metadata": {},
   "outputs": [],
   "source": [
    "网新二班 = {\n",
    "    1800001:\"李易峰\",\n",
    "    1800002:\"吴亦凡\",\n",
    "    1800003:\"罗志祥\",\n",
    "    1800004:\"林俊杰\"\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "id": "86e0f5ed",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{1800001: '李易峰', 1800002: '吴亦凡', 1800003: '罗志祥', 1800004: '林俊杰'} <class 'dict'>\n"
     ]
    }
   ],
   "source": [
    "print(网新二班,type(网新二班))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "0cb132e0",
   "metadata": {},
   "outputs": [],
   "source": [
    "# 因为学号是唯一的，可以作为字典的key"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "id": "a9a9ff7f",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{1800001: '李易峰', 1800002: '吴亦凡', 1800003: '罗志祥', 1800004: '林俊杰', 1800005: '吴亦凡'} <class 'dict'>\n"
     ]
    }
   ],
   "source": [
    "网新三班 = {\n",
    "    1800001:\"李易峰\",\n",
    "    1800002:\"吴亦凡\",\n",
    "    1800003:\"罗志祥\",\n",
    "    1800004:\"林俊杰\",\n",
    "    1800005:\"吴亦凡\"\n",
    "}\n",
    "print(网新三班,type(网新三班))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "id": "b451d781",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'林俊杰'"
      ]
     },
     "execution_count": 30,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# 字典的取值：通过keys进行字典的取值，unlike列表、元组和字符串通过index取值\n",
    "网新三班[1800004]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "id": "dab8c33f",
   "metadata": {},
   "outputs": [],
   "source": [
    "网新三班 = {\n",
    "    1800001:[\"李易峰\",\"广州\",\"男\",19,\"聊天记录\",\"朋友圈\"],\n",
    "    1800002:\"吴亦凡\",\n",
    "    1800003:\"罗志祥\",\n",
    "    1800004:\"林俊杰\",\n",
    "    1800005:\"吴亦凡\"\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "id": "20668969",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['李易峰', '广州', '男', 19, '聊天记录', '朋友圈']"
      ]
     },
     "execution_count": 32,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "网新三班[1800001]"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "e17e67f5",
   "metadata": {},
   "source": [
    "## 3.2 字典的一般方法\n",
    "* 1. 按照字典的形式直接创建(key:value)\n",
    "```\n",
    "网新二班 = {\n",
    "    1800001:\"李易峰\",\n",
    "    1800002:\"吴亦凡\",\n",
    "    1800003:\"罗志祥\",\n",
    "    1800004:\"林俊杰\"\n",
    "}\n",
    "```\n",
    "* 2. 使用dict()方法创建字典\n",
    "```\n",
    "网新四班 = dict(\n",
    "    stu1800001=\"李易峰\",\n",
    "    stu1800002=\"吴亦凡\",\n",
    "    stu1800003=\"罗志祥\",\n",
    "    stu1800004=\"林俊杰\"\n",
    ")\n",
    "```\n",
    "* 3. 使用字典增加的方式创建字典 ： dict[key] = value"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "id": "c8a334ce",
   "metadata": {},
   "outputs": [],
   "source": [
    "# 使用dict()方法创建字典\n",
    "网新四班 = dict(\n",
    "    stu1800001=\"李易峰\",\n",
    "    stu1800002=\"吴亦凡\",\n",
    "    stu1800003=\"罗志祥\",\n",
    "    stu1800004=\"林俊杰\"\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "id": "15f66f76",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'stu1800001': '李易峰',\n",
       " 'stu1800002': '吴亦凡',\n",
       " 'stu1800003': '罗志祥',\n",
       " 'stu1800004': '林俊杰'}"
      ]
     },
     "execution_count": 38,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "网新四班"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "id": "60859cf1",
   "metadata": {},
   "outputs": [],
   "source": [
    "# 3. 使用字典增加的方式创建字典 ： dict[key] = value\n",
    "网新一班 = {}\n",
    "网新一班[\"stu1800001\"] = \"李易峰\"\n",
    "网新一班[\"stu1800002\"] = \"吴亦凡\"\n",
    "网新一班[\"stu1800003\"] = \"罗志祥\"\n",
    "网新一班[\"stu1800004\"] = \"林俊杰\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "id": "131e7838",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'stu1800001': '李易峰',\n",
       " 'stu1800002': '吴亦凡',\n",
       " 'stu1800003': '罗志祥',\n",
       " 'stu1800004': '林俊杰'}"
      ]
     },
     "execution_count": 40,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "网新一班"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "bb3956da",
   "metadata": {},
   "outputs": [],
   "source": [
    "网新一班_keys = [\"stu1800001\",\"stu1800002\",\"stu1800003\",\"stu1800004\"]\n",
    "网新一班_values = [\"李易峰\", \"吴亦凡\", \"罗志祥\",\"林俊杰\"]\n",
    "网新一班 = {}\n",
    "for i in range(4):\n",
    "    网新一班[网新一班_keys[i]] = 网新一班_values[i]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "ac51ac73",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'stu1800001': '李易峰',\n",
       " 'stu1800002': '吴亦凡',\n",
       " 'stu1800003': '罗志祥',\n",
       " 'stu1800004': '林俊杰'}"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "网新一班"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "f5dfdbc7",
   "metadata": {},
   "source": [
    "* 字典的方法预习"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "6f1cec34",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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